I’m implementing my first Component Entity System and am having an issue. I have a requirement that some component properties be dynamic. I do not want to create a subclass that conforms to HasExampleComponent, so this was my approach. My issue is that even though the entity contains the property I can’t cast it to HasExampleComponent. When I create the entity I set the component like this: entity.components[ExampleComponent.self] = .init() I'd appreciate a template for a ECS with component properties that can be updated from the app. Thanks public struct ExampleComponent: Component {     public var value = 0 } public protocol HasExampleComponent: Entity { var value: Int } public class ExampleSystem: System {     private static let query = EntityQuery(where: .has(ExampleComponent.self))     public required init(scene: Scene) {}       public func update(context: SceneUpdateContext) {         context.scene.performQuery(Self.query).forEach { entity in // this won’t work because entity doesn’t conform to HasExampleComponent             entity.value += 1         }     } } extension Entity {     @available (iOS 15.0, *)     public var value: Int? {         get { components[RotatingComponent.self].value ?? 0}         set { components[RotatingComponent.self].value = newValue }     } }

The RoomCaptureView seems to have a coaching controller analogous to the ARCoachingOverlayView. The content is available via public func captureSession(_ session: RoomCaptureSession, didProvide instruction: RoomCaptureSession.Instruction) Is the view that presents these instructions available if not using the RoomCaptureView?

The pitch slider is not supported on tvOS yet it displays when using the Map() view. Does anyone know how to hide it? It's really getting in the way of my UI.

Why is the pitch slider always visible in the SwiftUI tvOS map view? It doesn't even appear to be supported there, let alone the fact that I specify mapControlVisibility(.hidden). Am I missing something or is Apple? See attached screenshot. This really messes up my UI. Here is my code: import SwiftUI import MapKit struct ContentView: View { @State var position = MapCameraPosition.region(MKCoordinateRegion( center: CLLocationCoordinate2D(latitude: 37.7749, longitude: -122.4194), span: MKCoordinateSpan(latitudeDelta: 0.05, longitudeDelta: 0.05))) var body: some View { Map(position: $position) .mapControlVisibility(.hidden) .mapStyle(.standard(pointsOfInterest: .including(.airport))) } }

Has anyone gotten custom buttons to work on top of tvOS Map()? I've tried many variations of FocusState focusSection .defaultFocus() and as soon as the map appears at startup the buttons never get focus again. They are on a ZStack over the map. I could post code but truthfully nothing works for me. I'm wondering if anyone has successfully put focusable buttons on top of the map view.

Hi, after rotating the iPad ARCamera.trackingState transitions to .initilizing and the video freezes. The application as a whole still functions. I'm unable to extract a relevant code example as this is embedded in a larger application. I am not seeing this behavior on iPhone. Is there any possibility that this is related to layout constraints? I see some warnings when the rotation occurs. Is there anything else I might examine? Thank you

I am presenting a list of Items which are sections by the categoryIdentifier property. My app uses CloudKit. When I add change the categoryIdentifier for an item it is display in the correct section and other running instances of the app do the same. When restarting the app some items are grouped under an incorrect section, but the cstegoryIdentifier within the item is still as it was set. My question is what I'm doing wrong that upon restart the organization is incorrect. In case it matters, I'm setting this in the container:         container.viewContext.automaticallyMergesChangesFromParent = true As an aside: It seems necessary to make the sectioning type optional (as is the case in the underlying entity) like this SectionedFetchResults<String?, Item> Though the examples don't seem to need this. struct ContentView: View {     @Environment(\.managedObjectContext) private var viewContext     @State private var isShowingItem = false     @State private var isAddingItem = false          @SectionedFetchRequest(         sectionIdentifier: \.categoryIdentifier,         sortDescriptors: [NSSortDescriptor(keyPath: \Item.name, ascending: true)],         animation: .default) private var sectionedItems: SectionedFetchResults<String?, Item>          var body: some View {         NavigationView {             List {                 ForEach(sectionedItems) { section in                     Section(header: Text(Category.nameForId(section.id, context: viewContext)).font(.headline)) {                         ForEach(section) { item in                             NavigationLink(destination: ItemInputView(item: item, category: Category.get(identifier: item.category, context: viewContext))) {                                 Text(item.getName())                             }                         }                     }                 }             }                          .navigationTitle("Foo")             .sheet(isPresented: $isAddingItem) {                 ItemInputView(item: nil, category: Category.getDefault(context: viewContext))             }         }         .navigationViewStyle(.stack)     } }

When using the RoomPlan UI (RoomCaptureView), one obtains the final result using  public func captureView(didPresent processedResult: CapturedRoom, error: Error?) which then gets exported via finalResults.export(to: url) What is the best way to do this if only using RoomCaptureSession? Should I just keep track if each CapturedRoom coming back in the delegate methods and use the final one?

Using the code below to fetch data for multiple urls I encounter a number of errors such as: 2021-12-01 20:20:32.090690-0500 foo[63170:6750061] [assertion] Error acquiring assertion: <Error Domain=RBSAssertionErrorDomain Code=2 "Specified target process does not exist" UserInfo={NSLocalizedFailureReason=Specified target process does not exist}> 021-12-01 20:20:32.115662-0500 yerl[63170:6749861] [ProcessSuspension] 0x10baf8cc0 - ProcessAssertion: Failed to acquire RBS assertion 'ConnectionTerminationWatchdog' for process with PID=63200, error: Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit} I've added the following to my entitlements file:  <key>com.apple.security.network.client</key>     <true/> with no change in the result. I gather that these are errors from a WKWebView but don't know how to resolve them. @State private var metadataProvider: LPMetadataProvider? ... metadataProvider?.startFetchingMetadata(for: url) { (linkMetadata, error) in             guard let linkMetadata = linkMetadata, let imageProvider = linkMetadata.iconProvider else { return }             imageProvider.loadObject(ofClass: UIImage.self) { (fetchedImage, error) in                 if let error = error {                     print(error.localizedDescription)                     return                 }                 if let uiimage = fetchedImage as? UIImage {                     DispatchQueue.main.async {                         let image = Image(uiImage: uiimage)                         self.image = image                         print("cache: miss \(url.absoluteString)")                         model.set(uiimage, for: url)                     }                 } else {                     print("no image available for \(url.absoluteString)")                 }             }         } Thanks in advance.

I am subclassing ARView. I'm seeing the following crash on Firebase during initialization. Unfortunately I can't reproduce it locally so I don't really know what is going on. All the devices are running iOS 15. Most of the devices have < 60 MB available RAM but not all, a few have more. It doesn't smell like a memory issue, but I mention it here... has anyone seen this? It crashes in this thread: Crashed: com.apple.root.default-qos EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x0000000000000000arrow_right 0 CoreRE re::CompoundShape::~CompoundShape() + 168 1 CoreRE re::CompoundShape::~CompoundShape() + 148 2 CoreRE re::CollisionShapeAssetLoader::unloadAsset(void*) + 176 3 CoreRE re::internal::AssetBackgroundLoader::unloadAsset(re::internal::AssetLoadItem&) + 168 4 CoreRE re::internal::AssetBackgroundLoader::runIfNeeded(re::internal::AssetLoadItem&) + 88 after starting on the main three: com.apple.main-thread0 ARKitCore +[ARSession setRenderType:] + 1022 2RealityKit ARView.init(frame:cameraMode:automaticallyConfigureSession:) + 740

I’m loading a USDZ model using Entity.loadAsync(contentsOf:) I’d like to get the dimensions of the model and I find that visualBounds(relativeTo: nil).extents returns dimensions larger than the actual dimensions while I see the correct dimensions when viewing the USDZ in Blender or when instantiating it as a MDLAsset(url:). What is the method to get the actual dimensions from an Entity? Thanks Thanks

In the WWDC video the code includes a reference to the visualizer object. var previewVisualizer: Visualizer! I'd like to create my own ViewController using RoomCaptureSession and incorporate the visualizer. This doesn't seem to be available in the RoomPlan framework, have I missed something or has this been removed from the public interface? Thanks

I'm suddenly getting link errors on the RoomPlan framework. Even the Apple sample code is not building. I'm on 13.0 Beta (22A5311f) with Xcode Version 14.0 beta 3 (14A5270f) on a Mac Studio. Is anyone else seeing this? dyld[1232]: Symbol not found: _$s8RoomPlan08CapturedA0V6export2toy10Foundation3URLV_tKF   Referenced from: <24F0F645-03CF-3834-BB80-F51E9CAEC10D> /private/var/containers/Bundle/Application/041C1232-EE67-42F3-AE47-F351FE81CE9A/RoomPlanExampleApp.app/RoomPlanExampleApp   Expected in:     <FFA44726-2CCB-3BE3-ABDE-26B7F6214D68> /System/Library/Frameworks/RoomPlan.framework/RoomPlan Symbol not found: _$s8RoomPlan08CapturedA0V6export2toy10Foundation3URLV_tKF   Referenced from: <24F0F645-03CF-3834-BB80-F51E9CAEC10D> /private/var/containers/Bundle/Application/041C1232-EE67-42F3-AE47-F351FE81CE9A/RoomPlanExampleApp.app/RoomPlanExampleApp   Expected in:     <FFA44726-2CCB-3BE3-ABDE-26B7F6214D68> /System/Library/Frameworks/RoomPlan.framework/RoomPlan dyld config: DYLD_LIBRARY_PATH=/usr/lib/system/introspection DYLD_INSERT_LIBRARIES=/usr/lib/libBacktraceRecording.dylib:/usr/lib/libMainThreadChecker.dylib:/usr/lib/libRPAC.dylib:/Developer/Library/PrivateFrameworks/DTDDISupport.framework/libViewDebuggerSupport.dylib

My RealityKit app uses an ARView with camera mode .nonAR. Later it puts another ARView with camera mode .ar on top of this. When I apply layout constraints to the second view the program aborts with the follow messages. If both views are of type .ar this doesn't occur, it is only when the first view is .nonAR and then has the second presented over it. I have been unable so far to reproduce this behavior in a demo program to provide to you and the original code is complex and proprietary. Does anyone know what is happening? I've seen other questions concerning situation but not under the same circumstances. 2021-12-01 17:59:11.974698-0500 MyApp[10615:6672868] -[MTLTextureDescriptorInternal validateWithDevice:], line 1325: error ‘Texture Descriptor Validation MTLTextureDescriptor has width (4294967295) greater than the maximum allowed size of 16384. MTLTextureDescriptor has height (4294967295) greater than the maximum allowed size of 16384. MTLTextureDescriptor has invalid pixelFormat (0). ’ -[MTLTextureDescriptorInternal validateWithDevice:]:1325: failed assertion `Texture Descriptor Validation MTLTextureDescriptor has width (4294967295) greater than the maximum allowed size of 16384. MTLTextureDescriptor has height (4294967295) greater than the maximum allowed size of 16384. MTLTextureDescriptor has invalid pixelFormat (0).

Hi, I'm embedding the QLPreviewController in a UIViewControllerRepresentable. When I view .usdz models I don't see the AR/Object selector at the top, nor the sharing button. I have tried presenting modally with a .sheet modifier and had the same result. What do I need to do to get the controls? Thanks, code attached. Code Spiff